题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113400-72302.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113400-71743.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113400-17824.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113401-34342.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113401-15915.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113401-10947.png)
(2)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113401-30572.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113402-51993.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113402-43314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113402-93389.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113402-66262.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113402-39706.png)
解析
试题分析:(1)由
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113403-50538.png)
而曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113400-17824.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113401-34342.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113401-15915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113403-33559.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113401-10947.png)
(2)由(1)的结果知
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113403-36403.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113403-40239.png)
试题解析:
解:(1)对
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113403-40239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113404-25105.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113403-40239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113404-27369.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113401-15915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113404-52335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113402-51993.png)
(2)由(1)知
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113404-46852.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113404-51862.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113405-75150.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113405-80168.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113405-93173.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113405-80168.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113403-40239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113405-91047.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113406-49075.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113406-96996.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113403-40239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113402-93389.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113406-10185.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113406-78888.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113403-40239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113402-43314.png)
由此知函数
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113403-40239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113405-93173.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113402-39706.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113346-59405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113347-59447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113347-12012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113347-81208.png)
(I)求
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113347-59643.png)
(II)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113347-45568.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113326-67111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113327-20401.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113259-21109.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113300-52468.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113300-42976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113300-62074.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113300-10615.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113301-23630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113301-73811.png)
(3)若在
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113301-77332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113301-40277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113301-66021.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113302-79825.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113240-50243.png)
(1)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113240-34547.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113240-97447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113240-84499.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113240-52584.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113241-60511.png)
(2)若存在
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113241-37802.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113241-97550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113226-93928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113226-92443.png)
⑴ 若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113226-88595.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113226-12385.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113227-70477.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113227-32226.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113227-61117.png)
⑵ 若存在
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113227-16323.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113227-74317.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017113228-25239.png)
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